CA3141287A1 - A modularized catalytic converter and a method of enhancing the efficiency of a catalytic converter - Google Patents
A modularized catalytic converter and a method of enhancing the efficiency of a catalytic converter Download PDFInfo
- Publication number
- CA3141287A1 CA3141287A1 CA3141287A CA3141287A CA3141287A1 CA 3141287 A1 CA3141287 A1 CA 3141287A1 CA 3141287 A CA3141287 A CA 3141287A CA 3141287 A CA3141287 A CA 3141287A CA 3141287 A1 CA3141287 A1 CA 3141287A1
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- Prior art keywords
- catalytic converter
- gas
- heat generator
- assembly
- exhaust gas
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- 230000003197 catalytic effect Effects 0.000 title claims abstract description 128
- 238000000034 method Methods 0.000 title claims description 10
- 230000002708 enhancing effect Effects 0.000 title claims description 5
- 239000007789 gas Substances 0.000 claims abstract description 76
- 238000004140 cleaning Methods 0.000 claims abstract description 26
- 238000010438 heat treatment Methods 0.000 claims abstract description 24
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 12
- 239000012530 fluid Substances 0.000 claims abstract description 6
- 238000004891 communication Methods 0.000 claims abstract description 3
- 238000002485 combustion reaction Methods 0.000 claims description 16
- 239000003054 catalyst Substances 0.000 claims description 15
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 45
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 abstract description 8
- 229930195733 hydrocarbon Natural products 0.000 abstract description 3
- 150000002430 hydrocarbons Chemical class 0.000 abstract description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 5
- 238000005485 electric heating Methods 0.000 description 4
- 230000002301 combined effect Effects 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000003517 fume Substances 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000007669 thermal treatment Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
- F01N13/0097—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series the purifying devices are arranged in a single housing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/9459—Removing one or more of nitrogen oxides, carbon monoxide, or hydrocarbons by multiple successive catalytic functions; systems with more than one different function, e.g. zone coated catalysts
- B01D53/9477—Removing one or more of nitrogen oxides, carbon monoxide, or hydrocarbons by multiple successive catalytic functions; systems with more than one different function, e.g. zone coated catalysts with catalysts positioned on separate bricks, e.g. exhaust systems
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
- F01N3/2013—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating using electric or magnetic heating means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/24—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by constructional aspects of converting apparatus
- F01N3/28—Construction of catalytic reactors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N5/00—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy
- F01N5/04—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy the devices using kinetic energy
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C1/00—Gas-turbine plants characterised by the use of hot gases or unheated pressurised gases, as the working fluid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/01—Engine exhaust gases
- B01D2258/018—Natural gas engines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
- F01N2240/16—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being an electric heater, i.e. a resistance heater
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
- F01N2240/20—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being a flow director or deflector
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2220/00—Application
- F05D2220/40—Application in turbochargers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
- F05D2220/00—Application
- F05D2220/70—Application in combination with
- F05D2220/76—Application in combination with an electrical generator
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Health & Medical Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Toxicology (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Exhaust Gas After Treatment (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
Abstract
A catalytic converter module assembly (30) comprises a plurality of catalytic converter modules (11, 12, 1n) arranged in series such that gas (E) may be fed through successive catalytic converter modules (11, 12, 1n). Each catalytic converter module (1) comprises a catalytic converter (2) having one or more catalytic converter members (2a) arranged and configured for fluid contact with a gas (E), and a heat generator (3) arranged close to and upstream of the catalytic converter (2). The heat generator (3) and the catalytic converter (2) are arranged in fluid communication and interconnected by connection means (6) so as to form a unitary device. The invention allows for heating a gas (E) flowing past the heat generator substantially immediately before the gas is exposed to the catalytic converter (2) or catalytic converter member (2a), whereby the efficiency of a catalytic converter is enhanced. The invention is particularly useful for cleaning non-combusted hydrocarbons, such as methane, carbon monoxide, or nitrogen oxides, in the exhaust gas.
Description
A modularized catalytic converter and a method of enhancing the efficiency of a catalytic converter Field of the invention The invention concerns the thermal treatment of exhaust gases or fumes from various industrial processes, such as process plants, internal combustion engines, gas turbines, boilers, etc., in particular gases containing traces of methane. More specifically, the invention concerns a module-based catalytic converter and a method of enhancing the efficiency of a catalytic converter by applying electrical energy in a special way from an external source.
io Background of the invention Various energy gases, such as natural gas (NG), biogas (BG), etc., contain methane (CH4) as their main energy-carrying component. Methane-based fuels are becoming increasingly popular in various types of combustion machinery because of their low-polluting combustion characteristics and favourable low carbon content (low is emissions per unit of energy produced).
However, as methane is a very stable gas, it is both difficult to ignite and burn completely. In addition, modern combustion machinery mostly operate with a high air excess ("lean burn") in order to increase their efficiency and limit the formation of nitrogen oxides (NO) (which is mainly a temperature issue). This relatively cold 20 combustion might have difficulty in fully burning all the (stable) methane fuel, so that a small amount of partly burnt or un-burnt hydrocarbons (UHC) ¨ particularly methane ¨
might get emitted with the exhaust gases into the atmosphere.
In recent years, along with the global warming concern and awareness of the "greenhouse effect" of various gases, this "methane slip", although normally quite 25 small, has become of growing concern. This is because of the very strong greenhouse effect of methane, currently assumed to be 28 times higher than that of CO2.
Hence, methane emissions of all types, and particularly in the exhaust gases of combustion machinery, are rapidly gaining serious attention by the regulatory bodies and of society in general.
io Background of the invention Various energy gases, such as natural gas (NG), biogas (BG), etc., contain methane (CH4) as their main energy-carrying component. Methane-based fuels are becoming increasingly popular in various types of combustion machinery because of their low-polluting combustion characteristics and favourable low carbon content (low is emissions per unit of energy produced).
However, as methane is a very stable gas, it is both difficult to ignite and burn completely. In addition, modern combustion machinery mostly operate with a high air excess ("lean burn") in order to increase their efficiency and limit the formation of nitrogen oxides (NO) (which is mainly a temperature issue). This relatively cold 20 combustion might have difficulty in fully burning all the (stable) methane fuel, so that a small amount of partly burnt or un-burnt hydrocarbons (UHC) ¨ particularly methane ¨
might get emitted with the exhaust gases into the atmosphere.
In recent years, along with the global warming concern and awareness of the "greenhouse effect" of various gases, this "methane slip", although normally quite 25 small, has become of growing concern. This is because of the very strong greenhouse effect of methane, currently assumed to be 28 times higher than that of CO2.
Hence, methane emissions of all types, and particularly in the exhaust gases of combustion machinery, are rapidly gaining serious attention by the regulatory bodies and of society in general.
2 Development of efficient types of methane catalysts for the elimination of this "methane slip" has been going on for many years. However, the combination of low exhaust gas temperatures of modern gas combustion concepts in combination with the stability of methane to get oxidized, has so far not led to any successful or efficient types of .. methane exhaust catalysts for practical use with combustion machinery.
This is even a greater problem in industrial treatment of "ventilation gases"
or "fumes"
containing methane, as these normally are of moderate or ambient temperature.
Thus, the efficiency of most exhaust gas cleaning devices depends on the gas temperature. Catalytic converters require a certain minimum temperature in order for io the catalyst to start reacting with the exhaust gas. The cleaning efficiency of gas cleaning devices such as filters, scrubbers, etc., is also dependent on the exhaust gas temperature. One problem with prior art systems is that the exhaust gas temperature is too low, whereby the cleaning efficiency suffers. An essential objective of the invention is to improve the efficiency (performance) of the gas-cleaning device (i.a.
catalytic is .. converter) in applications with low exhaust temperatures.
The prior art includes JPH09100715A, which describes an exhaust emission control system for an internal combustion engine. The system comprises a branch passage which bypasses a part of an exhaust passage. An exhaust change-over valve is switched by a controller and when an electric heating type catalyst is made conductive, the 20 exhaust passage is shut off by the controller and the exhaust gas is caused to flow through the branch passage. Then, power obtained by the generator is supplied to the electric heating type catalyst. Thus, the starting failure of the internal combustion engine and the deterioration of a battery are prevented. In the engine, a generator is provided in the middle of the exhaust passage to generate electric power by the exhaust gas flow 25 flowing in the passage, and when the electrically heated catalyst becomes energized, the electric power obtained by the generator is electrically heated. And the generator is connected to the electrically heated catalyst.
The prior art also includes US8992843B2, which discloses a catalytic converter for confined areas, e.g. a vehicular tunnel, parking garage, or other confined area subject to 30 motor vehicle operation therein. The converter catalyses internal combustion engine
This is even a greater problem in industrial treatment of "ventilation gases"
or "fumes"
containing methane, as these normally are of moderate or ambient temperature.
Thus, the efficiency of most exhaust gas cleaning devices depends on the gas temperature. Catalytic converters require a certain minimum temperature in order for io the catalyst to start reacting with the exhaust gas. The cleaning efficiency of gas cleaning devices such as filters, scrubbers, etc., is also dependent on the exhaust gas temperature. One problem with prior art systems is that the exhaust gas temperature is too low, whereby the cleaning efficiency suffers. An essential objective of the invention is to improve the efficiency (performance) of the gas-cleaning device (i.a.
catalytic is .. converter) in applications with low exhaust temperatures.
The prior art includes JPH09100715A, which describes an exhaust emission control system for an internal combustion engine. The system comprises a branch passage which bypasses a part of an exhaust passage. An exhaust change-over valve is switched by a controller and when an electric heating type catalyst is made conductive, the 20 exhaust passage is shut off by the controller and the exhaust gas is caused to flow through the branch passage. Then, power obtained by the generator is supplied to the electric heating type catalyst. Thus, the starting failure of the internal combustion engine and the deterioration of a battery are prevented. In the engine, a generator is provided in the middle of the exhaust passage to generate electric power by the exhaust gas flow 25 flowing in the passage, and when the electrically heated catalyst becomes energized, the electric power obtained by the generator is electrically heated. And the generator is connected to the electrically heated catalyst.
The prior art also includes US8992843B2, which discloses a catalytic converter for confined areas, e.g. a vehicular tunnel, parking garage, or other confined area subject to 30 motor vehicle operation therein. The converter catalyses internal combustion engine
3 exhaust by-products by selective catalytic reduction. The heat required for the catalytic reaction is provided by an electric heater installed with the converter, the converter being thermally insulated to retain the heat. The catalytic converter includes at least one electric heating element disposed within a housing and adjacent to the catalytic converter elements, the electric heating elements extending substantially from the first end to the second end of the housing. The heating elements are preferably immediately adjacent to the catalytic converter elements, enclosed within thermal insulation and a ceramic shell with the catalytic converter elements in order to maximize heating efficiency of the elements. Electrical power for the heating elements may be provided 1() by any suitable conventional means.
The prior art also includes JP H051525 A, which discloses an electrically powered ribbon heater placed upstream of a catalytic converter. The assembly is installed to an exhaust passage or a bypass in an internal combustion engine, and the ribbon heater is energized to heat the catalyst to an activation temperature.
is There is a need to provide catalytic converters that are more efficient and compact than those of the prior art, particularly for use in systems where gases containing UHCs, in particular methane, are vented to the atmosphere, and in confined spaces such as engine compartments for automobiles, lorries and seagoing vessels.
Summary of the invention 20 .. The invention is set forth and characterized in the main claims, while the dependent claims describe other characteristics of the invention.
It is thus provided a catalytic converter module assembly, characterized by a plurality of catalytic converter modules arranged in series such that a gas may be fed through successive catalytic converter modules and treated in stages. A catalytic converter 25 module comprises a catalytic converter having one or more catalytic converter members arranged and configured for fluid contact with a gas to be treated by the catalytic converter, characterized in that the catalytic converter module further comprises a heat generator arranged adjacent to and upstream of the catalytic converter; and the heat generator and the catalytic converter are arranged in fluid communication and 30 interconnected by connection means so as to form a unitary device (module).
The prior art also includes JP H051525 A, which discloses an electrically powered ribbon heater placed upstream of a catalytic converter. The assembly is installed to an exhaust passage or a bypass in an internal combustion engine, and the ribbon heater is energized to heat the catalyst to an activation temperature.
is There is a need to provide catalytic converters that are more efficient and compact than those of the prior art, particularly for use in systems where gases containing UHCs, in particular methane, are vented to the atmosphere, and in confined spaces such as engine compartments for automobiles, lorries and seagoing vessels.
Summary of the invention 20 .. The invention is set forth and characterized in the main claims, while the dependent claims describe other characteristics of the invention.
It is thus provided a catalytic converter module assembly, characterized by a plurality of catalytic converter modules arranged in series such that a gas may be fed through successive catalytic converter modules and treated in stages. A catalytic converter 25 module comprises a catalytic converter having one or more catalytic converter members arranged and configured for fluid contact with a gas to be treated by the catalytic converter, characterized in that the catalytic converter module further comprises a heat generator arranged adjacent to and upstream of the catalytic converter; and the heat generator and the catalytic converter are arranged in fluid communication and 30 interconnected by connection means so as to form a unitary device (module).
4 In one embodiment, the heat generator is arranged a distance upstream of the catalytic converter and a gas reaction zone is defined between at least one heating member in the heat generator and said one or more catalytic converter members. Said distance may be zero, in which case the heat generator and catalytic converter are arranged immediately adjacent to one another as a common unit (mesh). The connection means may be a clamp assembly.
In one embodiment, the heat generator and the catalytic converter are of screen-type designs. The catalytic converter module is preferably arranged inside a thermally insulated conduit. The heat generator may comprise one or more heating members. The io heat generator may comprise one or more turbulators.
The catalytic converter modules may have different catalyst material.
It is also provided a cleaning assembly for treating exhaust gases from a thermal engine, characterized by an exhaust gas turbine, fluidly connected to an exhaust gas conduit of the thermal engine and arranged to receive exhaust gas, the catalytic converter assembly is according to the invention, configured for receiving the exhaust gas and for heating and treating the gas. The cleaning assembly may further comprise an electric generator driven by the exhaust gas turbine. In one embodiment, the catalytic converter assembly is arranged upstream of the exhaust gas turbine. A catalytic converter assembly may also or additionally be arranged downstream of the exhaust gas turbine. The thermal 20 engine may be an internal combustion engine.
It is also provided a method of enhancing the efficiency of a catalytic converter, characterized by providing a localized heat generator at a distance upstream of a catalytic converter or catalytic converter member (2a), and energizing the heat generator to heat a gas flowing past the heat generator substantially immediately before the gas is 25 exposed to the catalytic converter or catalytic converter member and optimize heat input and catalytic contact area of the gas to be treated when flowing through the catalytic converter module (1). The distance may be zero, in which case the heat generator and catalytic converter are arranged immediately adjacent to one another as a common unit.
It is also provided a method of treating a gas, characterized by subjecting the gas to 30 repeated heating and cleaning stages as it passes through successive catalytic converter modules. The heat may be generated in such a way as to optimize the temperature profile permanently or temporarily depending on the system operating conditions.
This invention is a result of a comprehensive involvement with methane-combusting machinery of different types, and profound studies into both the problem of "methane
In one embodiment, the heat generator and the catalytic converter are of screen-type designs. The catalytic converter module is preferably arranged inside a thermally insulated conduit. The heat generator may comprise one or more heating members. The io heat generator may comprise one or more turbulators.
The catalytic converter modules may have different catalyst material.
It is also provided a cleaning assembly for treating exhaust gases from a thermal engine, characterized by an exhaust gas turbine, fluidly connected to an exhaust gas conduit of the thermal engine and arranged to receive exhaust gas, the catalytic converter assembly is according to the invention, configured for receiving the exhaust gas and for heating and treating the gas. The cleaning assembly may further comprise an electric generator driven by the exhaust gas turbine. In one embodiment, the catalytic converter assembly is arranged upstream of the exhaust gas turbine. A catalytic converter assembly may also or additionally be arranged downstream of the exhaust gas turbine. The thermal 20 engine may be an internal combustion engine.
It is also provided a method of enhancing the efficiency of a catalytic converter, characterized by providing a localized heat generator at a distance upstream of a catalytic converter or catalytic converter member (2a), and energizing the heat generator to heat a gas flowing past the heat generator substantially immediately before the gas is 25 exposed to the catalytic converter or catalytic converter member and optimize heat input and catalytic contact area of the gas to be treated when flowing through the catalytic converter module (1). The distance may be zero, in which case the heat generator and catalytic converter are arranged immediately adjacent to one another as a common unit.
It is also provided a method of treating a gas, characterized by subjecting the gas to 30 repeated heating and cleaning stages as it passes through successive catalytic converter modules. The heat may be generated in such a way as to optimize the temperature profile permanently or temporarily depending on the system operating conditions.
This invention is a result of a comprehensive involvement with methane-combusting machinery of different types, and profound studies into both the problem of "methane
5 slip", as well as developments of efficient methane exhaust catalysts.
This has led to a novel and inventive approach, where electrical heating is used as additional energy applied in a novel way to create particularly favourable oxidation conditions for any methane in the exhaust stream, in order to limit the amount of energy needed.
This new concept may also be applied in other types of oxidizing exhaust catalysts.
io The invention comprises a localized heat generator arranged close to a catalytic converter in order to increase the temperature in a gas immediately before it is exposed to the catalytic converter, which in combination create a local hot reacting zone.
The invention is particularly useful for treating (cleaning) non-combusted hydrocarbons, such as methane, carbon monoxide, etc., in exhaust gases or in a is ventilation gas stream.
Brief description of the drawings These and other characteristics of the invention will become clear from the following description of embodiments of the invention, given as a non-restrictive examples, with reference to the attached schematic drawings, wherein:
20 Figure 1 is a schematic sectional drawing of an embodiment of the catalytic converter module according to the invention, illustrating a typical arrangement of a heat generator in combination with a catalytic converter unit;
Figure 2 is a perspective drawing, schematically illustrating an array of catalytic converter modules according to the invention arranged one downstream of the other, as 25 a unitary package;
Figure 3 is a schematic sectional drawing corresponding to figure 1, but illustrates an embodiment having turbulence-inducing heat generators;
This has led to a novel and inventive approach, where electrical heating is used as additional energy applied in a novel way to create particularly favourable oxidation conditions for any methane in the exhaust stream, in order to limit the amount of energy needed.
This new concept may also be applied in other types of oxidizing exhaust catalysts.
io The invention comprises a localized heat generator arranged close to a catalytic converter in order to increase the temperature in a gas immediately before it is exposed to the catalytic converter, which in combination create a local hot reacting zone.
The invention is particularly useful for treating (cleaning) non-combusted hydrocarbons, such as methane, carbon monoxide, etc., in exhaust gases or in a is ventilation gas stream.
Brief description of the drawings These and other characteristics of the invention will become clear from the following description of embodiments of the invention, given as a non-restrictive examples, with reference to the attached schematic drawings, wherein:
20 Figure 1 is a schematic sectional drawing of an embodiment of the catalytic converter module according to the invention, illustrating a typical arrangement of a heat generator in combination with a catalytic converter unit;
Figure 2 is a perspective drawing, schematically illustrating an array of catalytic converter modules according to the invention arranged one downstream of the other, as 25 a unitary package;
Figure 3 is a schematic sectional drawing corresponding to figure 1, but illustrates an embodiment having turbulence-inducing heat generators;
6 Figure 4 is a perspective drawing, schematically illustrating an alternative embodiment of the invention in which the catalytic converter module comprises a unit in which the catalytic converter members and heating members are combined into one unit where the catalytic converter members and heating members form a common mesh structure; and Figure 5 is diagram illustrating a system incorporating the catalytic converter module according to the invention used in association with an internal combustion engine.
Detailed description of embodiments of the invention o The following description may use terms such as "horizontal", "vertical", "lateral", "back and forth", "up and down", "upper", "lower", "inner", "outer", "forward", "rear", etc. These terms generally refer to the views and orientations as shown in the drawings and that are associated with a normal use of the invention. The terms are used for the reader's convenience only and shall not be limiting.
Referring initially to figure 1, the invented catalytic converter module 1 comprises in the illustrated embodiment a catalytic converter 2 and a heat generator 3 arranged upstream and a short distance from of the catalytic converter 2. The heat generator 3 is illustrated as an electrically powered heat generator, having one or more heating members 3a in the form of resistance wires and a power cable 8 connected to an electrical power source (not shown). The heating members 3a are arranged in an electrically insulated housing 4. It should be understood that the heating member 3a may be any type of electrical heating source (e.g. positive temperature coefficient (PTC) element or resistance wire).
The catalytic converter 2 comprises a plurality of catalytic converter members 2a, such members per se being known in the art. These catalytic converter members are arranged in a frame 5 and such that they are exposed to gases flowing through the catalytic converter. Reference letter A denotes the center-to-center distance between the catalytic converter member 2a and the heating member 3a and defines a gas reaction zone A
within the catalytic converter module 1.
Detailed description of embodiments of the invention o The following description may use terms such as "horizontal", "vertical", "lateral", "back and forth", "up and down", "upper", "lower", "inner", "outer", "forward", "rear", etc. These terms generally refer to the views and orientations as shown in the drawings and that are associated with a normal use of the invention. The terms are used for the reader's convenience only and shall not be limiting.
Referring initially to figure 1, the invented catalytic converter module 1 comprises in the illustrated embodiment a catalytic converter 2 and a heat generator 3 arranged upstream and a short distance from of the catalytic converter 2. The heat generator 3 is illustrated as an electrically powered heat generator, having one or more heating members 3a in the form of resistance wires and a power cable 8 connected to an electrical power source (not shown). The heating members 3a are arranged in an electrically insulated housing 4. It should be understood that the heating member 3a may be any type of electrical heating source (e.g. positive temperature coefficient (PTC) element or resistance wire).
The catalytic converter 2 comprises a plurality of catalytic converter members 2a, such members per se being known in the art. These catalytic converter members are arranged in a frame 5 and such that they are exposed to gases flowing through the catalytic converter. Reference letter A denotes the center-to-center distance between the catalytic converter member 2a and the heating member 3a and defines a gas reaction zone A
within the catalytic converter module 1.
7 PCT/N02020/050127 The heat generator 3 is arranged adjacent to, and a distance X upstream of, the catalytic converter 2, and is connected to the catalytic converter 2 by connection means 6, here in the form of a clamp assembly 6. Although not illustrated, it should be understood that the connection means 6 may comprise bolts, adhesives and/or any other bonding means, and not be limited to the illustrated clamp assembly. The heat generator 3 and the catalytic converter 2 may in a preferred embodiment both be of screen-type designs, but other designs are conceivable. The distance X may be dimensioned according to the application at hand, and may range from zero to several centimetres. The combined effect of the heat generator 3 and the catalytic converter 2 together produces the io cleaning reaction depending on various parameters, of which the size of the reaction zone A is of importance. The distance X, which may be defined a spacer element, ensures that the heat generator and catalytic converter are maintained at the right distance, and by changing the distance X, the extension of the reaction zone A
may be optimized.
is The catalytic converter module 1 is arranged inside a conduit 7, which may be a thermally insulated duct. Although not illustrated, the conduit 7 and the catalytic converter module 1 may have a circular cross-section or a rectangular cross-section. The invention shall not be limited to cross-sectional shape. A plurality of catalytic converter modules li, 12, ... in may thus be arranged one downstream of the other, in an array 20 (assembly) 30, as illustrated in figure 2, in order to enhance cleaning effect. One or more individual catalytic converter modules in may be removed for cleaning or inspection purposes, replacement, etc. Also, the array (assembly) 30 may comprise catalytic converter modules having different properties (e.g. catalyst material), depending on the application.
25 .. The "stacking" of catalytic converter modules 1 as shown in figure 2 may enable optimization of important reaction parameters such as temperature, residence time, flow conditions, catalyst material, etc. to the given exhaust treatment process(es). The exhaust gas is subjected to repeated heating and cleaning stages as it passes through successive catalytic converter modules li, 12, ... in.
30 In use, untreated exhaust gas E enters the heat generator 3 where it is exposed to high local temperatures in a zone of very limited axial distance before it immediately
may be optimized.
is The catalytic converter module 1 is arranged inside a conduit 7, which may be a thermally insulated duct. Although not illustrated, the conduit 7 and the catalytic converter module 1 may have a circular cross-section or a rectangular cross-section. The invention shall not be limited to cross-sectional shape. A plurality of catalytic converter modules li, 12, ... in may thus be arranged one downstream of the other, in an array 20 (assembly) 30, as illustrated in figure 2, in order to enhance cleaning effect. One or more individual catalytic converter modules in may be removed for cleaning or inspection purposes, replacement, etc. Also, the array (assembly) 30 may comprise catalytic converter modules having different properties (e.g. catalyst material), depending on the application.
25 .. The "stacking" of catalytic converter modules 1 as shown in figure 2 may enable optimization of important reaction parameters such as temperature, residence time, flow conditions, catalyst material, etc. to the given exhaust treatment process(es). The exhaust gas is subjected to repeated heating and cleaning stages as it passes through successive catalytic converter modules li, 12, ... in.
30 In use, untreated exhaust gas E enters the heat generator 3 where it is exposed to high local temperatures in a zone of very limited axial distance before it immediately
8 thereafter comes into contact with the catalytic converter members 2a in the catalytic converter 2. The arrow C in figure 1 denotes a treated gas.
The electric energy supplied to the heat generator 3 may be of a fixed amount or it may be actively controlled from a suitable unit (not shown). In the latter case, it is typically arranged as a closed-loop control system, where a feedback sensor(s) inside and/or downstream of the catalyst gives a signal back to the electric controller. The electric controller may further control the various electric heater members 3 individually and differently according to the system operation conditions. In this way, an active exhaust cleaning down to a pre-set emission value may be achieved, and the system may be 1() safe-guarded.
The cleaning effect of a given catalytic converter module 1 is produced by the combined effect which the heat generator 3 and the catalytic converter 2 have on the exhaust stream E. In order to optimize this effect relative to the energy consumption, size etc., various ways of arranging the heat generator and catalytic converter within a module is may be possible.
Figure 3 illustrates another embodiment of the heat generator 3, in which one or more of the heating members 3b are shaped and arranged to function as turbulence generators.
Although not illustrated, it should be understood that the heat generator may comprise heating members and turbulence generators also as separate members. The turbulence 20 generators will influence the gas flowing though the reaction zone A, and thus contribute to improved cleaning efficiency for certain applications. The turbulence generators will also contribute to removing particles, oxides, etc., that may tend to accumulate in the catalytic converter with use.
Figure 4 illustrates another embodiment of the catalytic converter module l', in which a 25 plurality of catalytic converter members 2a and heating members 3b are shaped as elongated members and interconnected to form a common screen (mesh).
Figure 5 illustrates an application of the invented catalytic converter assembly 30, arranged in a cleaning assembly 20 to treat exhaust gases from a thermal engine 10 (e.g.
an internal combustion engine). The cleaning assembly 20 comprises an exhaust gas 30 turbine 21, fluidly connected to the exhaust gas conduit (e.g. manifold) 11 of the
The electric energy supplied to the heat generator 3 may be of a fixed amount or it may be actively controlled from a suitable unit (not shown). In the latter case, it is typically arranged as a closed-loop control system, where a feedback sensor(s) inside and/or downstream of the catalyst gives a signal back to the electric controller. The electric controller may further control the various electric heater members 3 individually and differently according to the system operation conditions. In this way, an active exhaust cleaning down to a pre-set emission value may be achieved, and the system may be 1() safe-guarded.
The cleaning effect of a given catalytic converter module 1 is produced by the combined effect which the heat generator 3 and the catalytic converter 2 have on the exhaust stream E. In order to optimize this effect relative to the energy consumption, size etc., various ways of arranging the heat generator and catalytic converter within a module is may be possible.
Figure 3 illustrates another embodiment of the heat generator 3, in which one or more of the heating members 3b are shaped and arranged to function as turbulence generators.
Although not illustrated, it should be understood that the heat generator may comprise heating members and turbulence generators also as separate members. The turbulence 20 generators will influence the gas flowing though the reaction zone A, and thus contribute to improved cleaning efficiency for certain applications. The turbulence generators will also contribute to removing particles, oxides, etc., that may tend to accumulate in the catalytic converter with use.
Figure 4 illustrates another embodiment of the catalytic converter module l', in which a 25 plurality of catalytic converter members 2a and heating members 3b are shaped as elongated members and interconnected to form a common screen (mesh).
Figure 5 illustrates an application of the invented catalytic converter assembly 30, arranged in a cleaning assembly 20 to treat exhaust gases from a thermal engine 10 (e.g.
an internal combustion engine). The cleaning assembly 20 comprises an exhaust gas 30 turbine 21, fluidly connected to the exhaust gas conduit (e.g. manifold) 11 of the
9 thermal engine 10 and arranged to receive exhaust gas E. The exhaust gas turbine 21 is driving an electric generator 24 via a shaft 27, in a manner which per se is known in the art. The exhaust gas is fed into the catalytic converter assembly 30, which heats and treats (cleans) the gas as described above. Electrical power is supplied to the catalytic converter assembly 30 via power line 25. Reference number 26 denotes an external electrical power supply. Boxes drawn in dotted lines indicate alternative arrangements for the electric generator 24 and the catalytic converter assembly 30. The exhaust gas turbine 21 may also be driving an inlet compressor 22 which is fluidly connected to an inlet manifold 23.
io The exhaust turbine 21 as well as the generator 24 may preferably be part of an exhaust turbocharger, and the turbocharger and catalytic converter assembly 30 may be arranged in a suitable way to make up a exhaust cleaning assembly 20.
io The exhaust turbine 21 as well as the generator 24 may preferably be part of an exhaust turbocharger, and the turbocharger and catalytic converter assembly 30 may be arranged in a suitable way to make up a exhaust cleaning assembly 20.
Claims (16)
1. A catalytic converter module assembly (30), characterized by a plurality of catalytic converter modules (11,12, ... 1.) arranged in series such that a gas (E) may be fed through successive catalytic converter modules (11,12, ... 1.) and treated in stages.
2. The catalytic converter module assembly (30) of claim 1, wherein a catalytic converter module (1) comprises:
- a catalytic converter (2) having one or more catalytic converter members (2a) arranged for fluid contact with a gas (E) to be treated by the catalytic converter, and - an electrically powered heat generator (3) arranged adjacent to and upstream of the catalytic converter (2);
wherein the heat generator (3) and the catalytic converter (2) are arranged in fluid communication and interconnected by connection means (6) so as to form a unitary device (module).
- a catalytic converter (2) having one or more catalytic converter members (2a) arranged for fluid contact with a gas (E) to be treated by the catalytic converter, and - an electrically powered heat generator (3) arranged adjacent to and upstream of the catalytic converter (2);
wherein the heat generator (3) and the catalytic converter (2) are arranged in fluid communication and interconnected by connection means (6) so as to form a unitary device (module).
3. The catalytic converter module assembly of claim 1 or claim 2, wherein the heat generator (3) is arranged a distance (X) upstream of the catalytic converter (2), and a gas reaction zone (A) is defined between at least one heating member (3a) in the heat generator and said one or more catalytic converter members (2a).
4. The catalytic converter module assembly of any one of claims 1-3, wherein the heat generator (3) and the catalytic converter (2) comprise screen-type designs.
5. The catalytic converter module assembly of any one of claims 1-4, wherein it is arranged inside a thermally insulated conduit (7).
6. The catalytic converter module assembly of any one of claims 1-5, wherein the heat generator (3) comprises one or more heating members (3a).
7. The catalytic converter module assembly of any one of claims 1-6, wherein the heat generator (3) comprises one or more turbulators (3b).
8. The catalytic converter module assembly of any one of claims 1-7, wherein the catalytic converter modules (11,12, ... 1.), have different catalyst material.
9. A cleaning assembly (20) for treating exhaust gases from a thermal engine (10), characterized by - an exhaust gas turbine (21), fluidly connected to an exhaust gas conduit (11) of the thermal engine (10) and arranged to receive exhaust gas (E), - the catalytic converter assembly (30) as specified by any one of the claims 1-8, configured for receiving the exhaust gas (E) and for heating and treating the gas.
10. The cleaning assembly of claim 9, further comprising an electric generator (24) driven by the exhaust gas turbine (21).
11. The cleaning assembly of claim 8 or claim 9, wherein the catalytic converter assembly (30) is arranged upstream of the exhaust gas turbine (21).
12. The cleaning assembly of claim 8 or claim 9, wherein the catalytic converter assembly (30) is arranged downstream of the exhaust gas turbine (21).
13. The cleaning assembly of any one of claims 8-12, wherein the thermal engine (10) is an internal combustion engine.
14. A method of enhancing the efficiency of a catalytic converter (2), characterized by providing a localized heat generator (3) a distance (X) upstream of a catalytic converter (2) or catalytic converter member (2a), and energizing the heat generator to heat a gas (E) flowing past the heat generator substantially immediately before the gas is exposed to the catalytic converter (2) or catalytic converter member (2a), and optimize heat input and catalytic contact area of the gas to be treated when flowing through the catalytic converter module (1).
15. A method of treating a gas (E), characterized by subjecting the gas to repeated heating (3) and cleaning (2) stages as it passes through successive catalytic converter modules 1 1, 12, ... L.
16. The method of claim 15, wherein the heat (3) is generated in such a way as to optimize the temperature profile permanently or temporarily depending on the system operating conditions.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO20190635 | 2019-05-21 | ||
NO20190635A NO20190635A1 (en) | 2019-05-21 | 2019-05-21 | A catalytic converter module and a method of enhancing the efficiency of a catalytic converter |
PCT/NO2020/050127 WO2020236007A1 (en) | 2019-05-21 | 2020-05-19 | A modularized catalytic converter and a method of enhancing the efficiency of a catalytic converter |
Publications (1)
Publication Number | Publication Date |
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CA3141287A1 true CA3141287A1 (en) | 2020-11-26 |
Family
ID=73458107
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CA3141287A Pending CA3141287A1 (en) | 2019-05-21 | 2020-05-19 | A modularized catalytic converter and a method of enhancing the efficiency of a catalytic converter |
Country Status (7)
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US (1) | US20220205380A1 (en) |
EP (1) | EP3972725A4 (en) |
JP (1) | JP2022534189A (en) |
KR (1) | KR20220011147A (en) |
CA (1) | CA3141287A1 (en) |
NO (1) | NO20190635A1 (en) |
WO (1) | WO2020236007A1 (en) |
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DE102021103283A1 (en) * | 2021-02-11 | 2022-08-11 | Benteler Automobiltechnik Gmbh | Holder for an electric heating disc in an exhaust aftertreatment device |
US11939901B1 (en) | 2023-06-12 | 2024-03-26 | Edan Prabhu | Oxidizing reactor apparatus |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH051525A (en) * | 1990-11-15 | 1993-01-08 | Ngk Spark Plug Co Ltd | Exhaust purification device for internal combustion engine using catalyst converter |
US6109018A (en) * | 1996-07-26 | 2000-08-29 | Catalytica, Inc. | Electrically-heated combustion catalyst structure and method for start-up of a gas turbine using same |
US6079373A (en) * | 1997-05-13 | 2000-06-27 | Isuzu Ceramics Research Institute Co., Ltd. | Gas engine with a gas fuel reforming device |
JPH11130405A (en) * | 1997-10-28 | 1999-05-18 | Ngk Insulators Ltd | Reforming reaction device, catalytic device, exothermic catalytic body used for the same and operation of reforming reaction device |
JP4011184B2 (en) * | 1998-03-12 | 2007-11-21 | 本田技研工業株式会社 | Exhaust gas purification device for internal combustion engine |
US6347511B1 (en) * | 1999-12-21 | 2002-02-19 | Ford Global Technologies, Inc. | Exhaust gas purification system for lean burn engine |
JP2005076453A (en) * | 2003-08-29 | 2005-03-24 | Aisin Takaoka Ltd | Exhaust emission control device for internal combustion engine |
WO2008062916A1 (en) * | 2006-11-23 | 2008-05-29 | Il Jin Electric Co., Ltd. | Vehicle exhaust aftertreatment using catalytic coated electric heater |
EP2235337B8 (en) * | 2007-12-27 | 2017-04-12 | In The Works... | High-efficiency catalytic converters for treating exhaust gases |
US7829048B1 (en) * | 2009-08-07 | 2010-11-09 | Gm Global Technology Operations, Inc. | Electrically heated catalyst control system and method |
DE102013201947B4 (en) * | 2012-02-29 | 2023-01-12 | Ford Global Technologies, Llc | Method and device for heating the interior of a motor vehicle |
US8992843B2 (en) * | 2013-01-07 | 2015-03-31 | Umm Al-Qura University | Catalytic converter for confined areas |
EP2994333B1 (en) * | 2013-05-08 | 2017-04-26 | Volvo Truck Corporation | Vehicle propulsion system comprising an electrical power collector |
JP2015132256A (en) * | 2013-12-13 | 2015-07-23 | トヨタ自動車株式会社 | Internal combustion engine catalyst device |
EP3184769B1 (en) * | 2015-12-25 | 2018-07-18 | Kubota Corporation | Exhaust apparatus for diesel engine |
DE102016205316B4 (en) * | 2016-03-31 | 2024-08-14 | Man Energy Solutions Se | Catalyst unit and exhaust catalyst |
DE102016220421B4 (en) * | 2016-10-18 | 2023-12-14 | Man Energy Solutions Se | Exhaust gas aftertreatment system and internal combustion engine |
-
2019
- 2019-05-21 NO NO20190635A patent/NO20190635A1/en not_active Application Discontinuation
-
2020
- 2020-05-19 EP EP20810078.4A patent/EP3972725A4/en not_active Withdrawn
- 2020-05-19 US US17/613,007 patent/US20220205380A1/en not_active Abandoned
- 2020-05-19 JP JP2021567783A patent/JP2022534189A/en active Pending
- 2020-05-19 CA CA3141287A patent/CA3141287A1/en active Pending
- 2020-05-19 KR KR1020217041422A patent/KR20220011147A/en unknown
- 2020-05-19 WO PCT/NO2020/050127 patent/WO2020236007A1/en unknown
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WO2020236007A1 (en) | 2020-11-26 |
JP2022534189A (en) | 2022-07-28 |
EP3972725A1 (en) | 2022-03-30 |
KR20220011147A (en) | 2022-01-27 |
US20220205380A1 (en) | 2022-06-30 |
NO20190635A1 (en) | 2020-11-23 |
EP3972725A4 (en) | 2023-04-05 |
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